JP4861665B2 - Elevator hoist renewal method and elevator system - Google Patents

Description

The present invention relates to an elevator system that has been renewed by renewal method and this renewal process of the elevator hoisting machine in an elevator system that is installed in a building or the like.

  In an elevator system installed in a building or condominium, etc., after ten years have passed since the installation, the elevator car that moves up and down in the elevator hoistway constituting the elevator system or the elevator hoistway above the elevator hoistway is installed. Each component of the hoisting machine that moves the car installed in the machine room up and down via a rope and the control panel that drives and controls the hoisting machine is obsolete or inferior to the latest system To come.

  Therefore, it is necessary to carry out a renewal for updating each existing component member to a new component member having a high function. In this case, in general, all the components constituting the elevator system are not renewed at the same time, and considering the effect on the repair cost, etc., a winding incorporating a motor, a speed reducer, a sheep, or the like directly connected to the function. Renewal is carried out only for the upper machine and the control panel for controlling the hoisting machine.

  In addition, since there are employees and residents in buildings and apartments where elevators to be renewed are installed, it is necessary to complete the renewal in a short time.

  Patent Document 1 proposes a renewal method for updating an existing hoisting machine installed in the machine room to a new hoisting machine.

  Fig.7 (a) is a cross-sectional schematic diagram of the winding machine installed in the machine room before renewal. The upper surface of the floor 1 of the machine room is covered with cinder concrete 2. The lower part of a pair of machine beams 3 is embedded and fixed in the cinder concrete 2. A pair of transverse beams 4 are attached to the upper surfaces of the pair of machine beams 3 in a direction orthogonal thereto, and a hoisting machine 5 in which an electric motor, a speed reducer, a sheep, and the like are incorporated on the upper surface of the transverse beams 4. Is fixed.

  When renewing such an existing hoisting machine 5 to a new hoisting machine having a high function, the installation dimensions of the existing hoisting machine 5 are generally different from the mounting dimensions of the new hoisting machine. Is. In such a case, when the rewinding of the hoisting machine is performed, the machine beam 3 and the transverse beam 4) are simultaneously replaced with a new machine beam and a transverse beam having dimensions that match the mounting dimensions of the new hoisting machine. There is a need.

  However, since the lower part of the machine beam 3 is embedded and fixed in the cinder concrete 2 of the floor 1, in order to replace the existing machine beam 3 with a new machine beam, it is necessary to carry out construction with a large noise. Therefore, only the existing hoisting machine 5 and the existing transverse beam 4 in FIG. 7A are removed.

  Next, as shown in FIG. 7 (b), a support base 6 having a lower end fixed to the floor 1 through the cinder concrete 2 is provided at a position adjacent to the existing pair of machine beams 3. A new transverse beam 8 is attached to the upper surfaces of the pair of existing machine beams 3 and the support base 6, and a new machine beam 9 is formed on the upper surface of the new transverse beam 8 in a direction perpendicular to the transverse beam 8. Are stacked in two layers. An anti-vibration member 10 is interposed between the first-layer machine beam 9 and the second-layer machine beam 9. Then, the existing hoisting machine 11 is fixed to the upper surface of the new machine beam 9.

As described above, by providing the support base 6, it is possible to renew the existing hoisting machine 5 to the new hoisting machine 11 while leaving the existing machine beam 3 on the floor 1 of the machine room. .
Japanese Patent No. 2728156

  However, the elevator hoist renewal method shown in FIGS. 7A and 7B also has the following problems to be solved.

  In other words, existing hoisting machines, existing transverse beams, and other components attached to the hoisting machine are removed and then removed from the elevator's machine room, via stairs, or using a crane truck from the vicinity of the building Then, these unnecessary items had to be taken out and discarded as waste.

  In recent years, reduction of industrial waste is strongly demanded from the viewpoint of environmental protection, and it is also demanded to suppress waste as much as possible in renewal work of elevators.

  In addition, when unloading existing unnecessary members or loading new necessary members, the route to the machine room is narrow, which may cause reasons such as the inability to use a crane truck due to time restrictions on loading and unloading. If the equipment to be used is large, the route to the machine room is expanded to secure a route, and a large carrying-in / out operation is required by using a dedicated transfer jig. Reducing these incidental works directly leads to a reduction in construction costs. Therefore, it is required that diverting components related to the old hoisting machine can be used as much as possible for the elevator system after renewal.

  Further, in the above-described renewal method, in order to fix the support base 6 to the floor 1, a work for removing a part of the cinder concrete 2 covering the upper surface of the floor 1 is necessary, which causes a noise problem.

The present invention has been made in view of such circumstances, and it is possible to suppress the generation amount of unnecessary members accompanying renewal of the hoisting machine as much as possible without degrading the function of the elevator system. Elevator hoist renewal method that makes it easy to carry into the machine room, shortens the renewal work period for the hoist, and minimizes service degradation for elevator users in buildings and condominiums that incorporate this elevator system. Another object of the invention is to provide an elevator system which is renewed by the renewal process.

  In order to solve the above-described problems, the present invention is configured such that a lower part of a machine beam is embedded in a floor of a machine room provided above an elevator hoistway in which an elevator car moves up and down, and a machine bed is provided on the upper surface of the machine beam. In the method of renewing an elevator hoisting machine in an elevator system in which the hoisting machine for moving the car up and down is fixed on the upper surface of the machine bed, the existing hoisting machine fixed on the upper surface of the existing machine bed Removing, installing a new machine bed capable of fixing the new hoist on the upper surface of the existing machine bed from which the existing hoist has been removed from the upper surface, and the new machine installed A step of fixing a new hoist on the upper surface of the bed.

  In the renewal method of the elevator hoisting machine configured as described above, after removing the existing hoisting machine from the upper surface of the existing machine bed, a new hoisting machine corresponding to the new hoisting machine is installed on the upper surface of the existing machine bed. Install the machine bed. A new hoisting machine is fixed to the upper surface of the new machine bed.

  Therefore, since only the existing hoisting machine is removed by this renewal method, the constituent members removed by this renewal method can be minimized. In addition, since no work is performed on the floor of the machine room, it is possible to prevent noise problems from occurring.

  Further, according to another invention, in the above-described method for renewing an elevator hoisting machine, the new machine bed has a structure that can be disassembled into a plurality of members. Furthermore, it has the step which carries in the machine room in the state which decomposed | disassembled the new machine bed into the several member, and the step which assembles the several member carried in this machine room to a new machine bed. In the step of attaching the new machine bed, the assembled new machine bed is attached to the upper surface of the existing machine bed from which the existing hoisting machine has been removed.

  In the renewal method of the elevator hoisting machine configured as described above, the new machine bed can be disassembled into a plurality of members. Since the passage can be transported, a large entrance is opened in the machine room temporarily, and a large-scale crane is used from the outside to carry a new machine bed from the temporary entrance into the machine room. There is no need to implement.

  According to another aspect of the present invention, in the elevator hoist renewal method described above, the step of attaching a new machine bed includes a plurality of new hoisting machines on the upper surface of the existing machine bed from which the existing hoisting machine has been removed. Machine beds are stacked and installed.

According to another invention, a lower part of a machine beam is embedded in a floor of a machine room provided above an elevator hoistway where an elevator car moves up and down, and a machine bed is attached to the upper surface of the machine beam. In the renewal method of the elevator hoisting machine in the elevator system in which the hoisting machine for moving the car up and down is fixed on the upper surface of the bed,
A step of removing an existing hoisting machine fixed to the upper surface of an existing machine bed, a step of removing an existing machine bed attached to the upper surface of an existing machine beam, and a structure that can be disassembled into a plurality of members A new machine bed having an upper surface capable of fixing a new hoisting machine in a state of being disassembled into a plurality of members, and a plurality of members carried into the machine chambers, A step of assembling the existing machine bed, a step of attaching the new machine bed assembled on the upper surface of the existing machine beam from which the existing machine bed has been removed from the upper surface, and a new step mounted on the upper surface of the existing machine beam. And a step of fixing a new hoisting machine on the upper surface of the machine bed.

  In the renewal method of the elevator hoisting machine configured as described above, the components to be removed are the existing hoisting machine and the existing machine bed. And a new machine bed is carried into a machine room in the state decomposed | disassembled into the some member.

  Another invention is an elevator system after renewal. And this elevator system is attached to the upper surface of the existing machine beam with the lower part embedded in the floor of the machine room provided above the elevator hoistway where the elevator car moves up and down, An existing machine bed for fixing the hoisting machine for moving the car up and down on the upper surface, and a new hoisting machine for moving the car up and down attached to the upper surface of the existing machine bed are fixed. A new machine bed, a new hoisting machine fixed to the upper surface of the new machine bed and moving the car up and down on the upper surface, and a drive control of the new hoisting machine installed in the machine room And a new control panel.

  In the elevator system after the renewal configured as described above, a high-performance elevator system can be realized from the existing elevator system with a small repair cost.

  In the present invention, after removing the existing hoisting machine from the upper surface of the existing machine bed, a new machine bed is attached to the upper surface of the existing machine bed, and the new hoisting machine is installed on the upper surface of the new machine bed. Is fixed.

  Therefore, the components removed by this renewal method can be suppressed to a minimum, and since no work is performed on the floor of the machine room, noise problems can be prevented from occurring, and each new component machine can be prevented. Carrying into the room can be done easily. In addition, the renewal work period for the hoisting machine can be shortened with a small renovation cost, and the service degradation for elevator users of buildings and condominiums where this elevator system is incorporated can be suppressed as much as possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIGS. 1A to 1E are schematic cross-sectional views showing each renewal step of the renewal method for an elevator hoist according to the first embodiment of the present invention.

  Fig.1 (a) is a cross-sectional schematic diagram of the machine room in which the winding machine before renewal was installed. The upper surface of the floor 22 of the machine room 21 provided on the upper side of the elevator hoistway 20 where the elevator car moves up and down is covered with cinder concrete 23. The lower part of the existing machine beam 24 is embedded and fixed to the cinder concrete 23. A sheep 25 is pivotally supported by a shaft 25a provided near one end of the existing machine beam 24. A main rope 26 is suspended from the deflecting sheep 25.

  An existing machine bed 27 is attached to the upper surface of the existing machine beam 24, and an existing hoisting machine 28 is fixed to the upper surface of the existing machine bed 27. The existing hoisting machine 28 incorporates an electric motor, a speed reducer, a main sheep, a mounting member, and the like. The main rope 26 is suspended from the main sheep. A car and a counterweight (not shown) of the elevator hoistway 20 are attached to both ends of the main rope 26. In the machine room 21, an existing control panel (not shown) that drives and controls the existing hoisting machine 28 is disposed. Therefore, the existing hoisting machine 28 moves the car up and down in the elevator hoistway 20 based on the drive control of the existing control panel.

  When the existing hoisting machine 28 in the elevator system before renewal having such a configuration is renewed to a new high-performance hoisting machine 29 having a different size and shape, first, the car in the elevator hoistway 20 is, for example, the first floor. The main rope 26 is removed from the main sheep and the deflecting sheep 25. Further, the deflecting sheep 25 is temporarily removed from the shaft 25a of the existing machine beam 24. Then, as shown in FIG. 1 (b), the existing hoisting machine 28 is removed from the upper surface of the existing machine bed 27.

  Thereafter, as shown in FIG. 1C, a new machine having a shape corresponding to the size and shape of the new hoisting machine 29 on the upper surface of the existing machine bed 27 from which the existing hoisting machine 28 has been removed. Install the bed 30. And as shown in FIG.1 (d), the new winding machine 29 in which the electric motor, the reduction gear, the main sheep, the attachment member, etc. are incorporated in the upper surface of the new machine bed 30 is fixed. As shown in FIG. 1 (d), the deflecting sheep 25 is attached to the shaft 25 a of the machine beam 24, and the main rope 26 is suspended from the main sheep and the deflecting sheep 25 of the new hoisting machine 29.

  Finally, an existing control panel (not shown) is replaced with a new control panel (not shown), and the new control panel and the new hoisting machine 29 motor are connected by a power line and a signal line.

  In the elevator hoist renewal method of the first embodiment configured as described above, as shown in FIGS. 1A to 1E, the existing hoisting machine 28 is moved from the upper surface of the existing machine bed 27. After the removal, a new machine bed 30 is attached to the upper surface of the existing machine bed 27. A new hoisting machine 29 is fixed to the upper surface of the new machine bed 30.

  Therefore, since the constituent members removed by this renewal method are only the existing hoisting machine 29, the constituent members removed by this renewal method can be minimized. Moreover, since the construction for the floor 22 and the cinder concrete 23 of the machine room 21 is not carried out, it is possible to prevent noise problems from occurring.

(Second Embodiment)
FIG. 2 is a detailed sectional view showing a main part of the elevator system after renewal in which a new hoisting machine 29 according to the second embodiment of the present invention is incorporated. The same parts as those in the cross-sectional schematic diagram of FIG.

  In the elevator system of the second embodiment, the upper surface of the floor 22 of the machine room 21 provided on the upper side of the elevator hoistway 20 in which the elevator car moves up and down is covered with cinder concrete 23. The lower part of the existing machine beam 24 is embedded and fixed to the cinder concrete 23. A sheep 25 is pivotally supported by a shaft 25a provided near one end of the existing machine beam 24. A main rope 26 is suspended from the deflecting sheep 25.

  An existing machine bed 27 is attached to the upper surface of the existing machine beam 24 via vibration isolation members 31a, 31b, and 31c, and two new machine beds 30a having the same configuration are mounted on the upper surface of the existing machine bed 27. , 30b are stacked with vibration isolating members 32a, 32b sandwiched therebetween. Specifically, the lower new machine bed 30 a is fixed to the existing machine bed 27 with bolts / nuts 37.

  In addition, the renewal is performed in a direction in which the reinforcement angle 36 for supporting the weight of the new hoisting machine 29 is perpendicular to the paper surface at a position where the ends of the new machine beds 30a and 30b come into contact with each other in the existing machine bed 27. Additional installation as part of the work.

  On the upper surface of the upper new machine bed 30b of the two stacked new machine beds 30a, 30b, a new hoisting machine 29 is attached with a plurality of bolts / nuts 35 via an attachment member 33. It is fixed. The main rope 26 is suspended from the main sheep 34 of the new hoisting machine 29. A car and a counterweight (not shown) of the elevator hoistway 20 are attached to both ends of the main rope 26. Further, a new control panel (not shown) for driving and controlling the new hoisting machine 29 is disposed in the machine room 21. Therefore, the new hoisting machine 29 moves the car up and down in the elevator hoistway 20 based on the drive control of the new control panel.

  FIG. 3 is a detailed configuration diagram of the new machine bed 30b located on the upper side, FIG. 3 (a) is a perspective view, FIG. 3 (b) is a top view, and FIG. 3 (c) is a front view.

  In this new machine bed 30b, four metal plates 38a, 38b, 38c, and 38d having a substantially U-shaped cross section form a square tube with upper and lower end openings, and two reinforcing plates are provided in the square tube. Metal plates 38e and 38f for use are interposed. The metal plates 38a to 38f are fixed with bolts / nuts 39. Therefore, by removing each bolt / nut 39, the new machine bed 30b can be disassembled into six metal plates 38a to 38f.

  The lower new machine bed 30a has substantially the same configuration as the upper new machine bed 30b.

  In the elevator system according to the second embodiment configured as described above, the existing hoisting machine 28 and the existing control panel are replaced with a new hoisting machine 29 and a new one from the existing elevator system shown in FIG. Since only the new machine beds 30a and 30b are added to the control panel, a high-performance elevator system can be realized with a small repair cost.

  Furthermore, since the new machine beds 30a and 30b can be disassembled into six metal plates 38a to 38f, respectively, as shown in FIG. 3, the new machine beds 30a and 30b are respectively replaced during the renewal work. In a state of being disassembled into six metal plates 38a to 38f, it can be carried into the machine room 21 through a narrow passage. In the machine room 21, new machine beds 30a and 30b may be assembled using bolts / nuts 39.

  Therefore, when loading new machine beds 30a and 30b into the machine room 21, it is necessary to carry out large-scale loading / unloading work by, for example, destroying and expanding a part of the building and using a dedicated transfer jig. The new machine beds 30a and 30b can be easily carried into the machine room 21. Therefore, the renewal work period can be shortened and the renewal work cost can be reduced.

  In this embodiment, two new machine beds 30a and 30b are stacked in order to prevent the rope 26 from being bent greatly at the position of the deflecting sheep 25 and applying an excessive load to the deflecting sheep 26. However, it goes without saying that only one new machine bed 30 may be provided as shown in FIG.

(Third embodiment)
FIG. 4 is a detailed configuration diagram of a new machine bed 40 employed in the elevator hoist renewal method according to the third embodiment of the present invention. FIG. 4 (a) is a perspective view and FIG. 4 (b). Is a top view, and FIG. 4C is a top view showing a state in which the new machine bed 40 is deformed from a rectangle to a diamond.

  This new machine bed 40 has two lower angle members 41a, 41b on the upper surfaces of two lower angle members 41a, 41b arranged in parallel with each other and having a substantially U-shaped cross section. Four upper angle members 42 a, 42 b, 42 c, 42 d arranged in parallel to each other and connected to each other are connected by a connecting pin 45. Therefore, the horizontal crossing angle θ between the two lower angle members 41a and 41b and the four upper angle members 42a to 42d can be arbitrarily changed as shown in FIG.

  In the new machine bed 40 configured as described above, when the new machine bed 40 is carried into the machine room 21, the new machine bed 40 is transformed into a diamond shape as shown in FIG. By reducing the width of the new machine bed 40, the new machine bed 40 can be easily carried into the machine room 21.

  When the new machine bed 40 is mounted on the existing machine bed 27 as shown in FIG. 1 (c), as shown in FIG. 4 (a) and FIG. The horizontal crossing angle θ between the lower angle members 41a and 41b and the four upper angle members 42a to 42d is set to 90 °, and the outer shape of the new machine bed 40 is returned to the rectangular parallelepiped shape.

  Therefore, like the new machine beds 30a and 30b of the second embodiment shown in FIG. 3, it is not necessary to carry out a large carry-in / out operation, and the new machine bed 40 can be easily carried into the machine room 21. Therefore, the renewal work period can be shortened and the renewal work cost can be reduced.

  Furthermore, since this new machine bed 40 can be easily restored to the normal use state in the machine room 21, the renewal work can be carried out more efficiently.

(Fourth embodiment)
FIG. 5 is a detailed configuration diagram of a new machine bed 46 employed in the elevator hoist renewal method according to the fourth embodiment of the present invention. FIG. 5 (a) is a top view and FIG. 5 (b). FIG. 5C is an assembly view of the new machine bed 46. FIG.

  This new machine bed 46 has two metal plates 47a, 47b each having four through holes 49a, 49b, 49c, 49d, and both ends inserted into the respective through holes 49a, 49b, 49c, 49d. It is composed of four shaft rods 48a, 48b, 48c, 48d that connect two metal plates 47a, 47b.

  This new machine bed 46 can be easily disassembled into two metal plates 47a, 47b and four shaft bars 48a, 48b, 48c, 48d as shown in FIG. 5 (c). At the time of construction, the new machine bed 46 can be carried into the machine room 21 through a narrow passage while being disassembled into two metal plates 47a, 47b and four shaft rods 48a, 48b, 48c, 48d. . Then, the machine room 21 may be assembled into a new rectangular parallelepiped machine bed 46 shown in FIGS. 5A and 5B according to the procedure shown in FIG.

  Therefore, similarly to the new machine beds 30a and 30b of the second embodiment shown in FIG. 3, it is not necessary to perform a large carry-in / out operation, and the new machine bed 46 can be easily carried into the machine room 21. Therefore, the renewal work period can be shortened and the renewal work cost can be reduced.

(Fifth embodiment)
FIGS. 6A to 6E are schematic cross-sectional views showing each renewal step of the renewal method for an elevator hoist according to the fifth embodiment of the present invention. The same parts as those of the elevator hoist renewal method according to the first embodiment shown in FIGS. 1A to 1E are denoted by the same reference numerals, and detailed description of the overlapping parts is omitted.

  In the fifth embodiment, first, the car is fixed to the reference floor, and the main rope 26 is removed from the main sheep and the deflected sheep 25. Further, the deflecting sheep 25 is temporarily removed from the shaft 25a of the existing machine beam 24. Then, as shown in FIG. 6 (b), the existing hoisting machine 28 is removed from the upper surface of the existing machine bed 27. Further, as shown in FIG. 6C, the existing machine bed 27 is removed from the upper surface of the existing machine beam 24.

  Thereafter, as shown in FIG. 6D, a new machine bed 30 is attached to the upper surface of the existing machine beam 24 after the existing machine bed 27 is removed. Then, as shown in FIG. 6 (d), a new hoisting machine 29 in which an electric motor, a speed reducer, a main sheep, an attachment member, and the like are incorporated is fixed to the upper surface of the new machine bed 30. Thereafter, the deflector sheep 25 is attached to the shaft 25 a of the machine beam 24, and the main rope 26 is suspended from the main sheep and the deflector sheep 25 of the new hoisting machine 29.

  Finally, an existing control panel (not shown) is replaced with a new control panel (not shown), and the new control panel and the motor of the new hoisting machine 29 are connected to each other through power lines and signal lines.

  In the elevator hoist renewal method of the fifth embodiment configured as described above, as shown in FIGS. 6A to 6E, an existing hoisting machine 28 and an existing machine bed 27 are installed. After removal from the upper surface of the machine beam 24, a new machine bed 30 is attached to the upper surface of the existing machine beam 24. A new hoisting machine 29 is fixed to the upper surface of the new machine bed 30.

  Therefore, since the constituent members removed by this renewal method are only the existing hoisting machine 29 and the existing machine bed 27, the constituent members removed by this renewal method can be suppressed. Furthermore, since the new machine bed 30 can be disassembled into the six metal plates 38 a to 38 f as described above, the new machine bed 30 can be easily carried into the machine room 21.

  Therefore, it is possible to achieve substantially the same operational effects as the elevator hoist renewal method according to the first embodiment shown in FIGS.

Sectional schematic diagram which shows each renewal process of the renewal method of the elevator hoisting machine concerning 1st Embodiment of this invention. Detail sectional drawing which takes out and shows the principal part of the elevator system after renewal concerning 2nd Embodiment of this invention The figure which shows schematic structure of the new machine bed built in the elevator system after the renewal The figure which shows schematic structure of the new machine bed concerning 3rd Embodiment of this invention. The figure which shows schematic structure of the novel machine bed concerning 4th Embodiment of this invention. Sectional schematic diagram which shows each renewal process of the renewal method of the elevator hoisting machine concerning 5th Embodiment of this invention Cross-sectional schematic diagram showing each renewal process of the conventional elevator hoist renewal method

Explanation of symbols

  DESCRIPTION OF SYMBOLS 20 ... Elevator hoistway, 21 ... Machine room, 22 ... Floor, 23 ... Cinder concrete, 24 ... Existing machine beam, 25 ... Warp sheep, 26 ... Main rope, 27 ... Existing machine bed, 28 ... Existing winding 29 ... New hoisting machine, 30, 30a, 30b, 40, 46 ... New machine bed, 31a, 31b, 31c, 32a, 32b ... Anti-vibration member, 33 ... Mounting member, 34 ... Main sheep, 35 , 37, 39 ... bolts / nuts, 36 ... reinforcing angles, 38a to 38f, 47a, 47b ... metal plates, 41a, 41b ... lower angle members, 42a, 42b ... upper angle members, 45 ... connecting pins, 48a-48d ... shaft bar

Claims (5)

The lower part of the machine beam is embedded in the floor of the machine room provided above the elevator hoistway where the elevator car moves up and down, and the machine bed is mounted on the upper surface of the machine beam. In the renewal method of the elevator hoisting machine in the elevator system in which the hoisting machine that moves up and down is fixed,
Removing the existing hoisting machine fixed to the upper surface of the existing machine bed;
Attaching a new machine bed capable of fixing the new hoisting machine to the upper surface of the existing machine bed from which the existing hoisting machine has been removed from the upper surface;
A method of renewing an elevator hoisting machine, comprising: a step of fixing the new hoisting machine on an upper surface of the attached new machine bed. The novel machine bed has a structure that can be disassembled into a plurality of members,
In a state in which the new machine bed is disassembled into a plurality of members, the step of carrying into the machine room, and the step of assembling the plurality of members carried into the machine room into the new machine bed,
The elevator winding according to claim 1, wherein the step of attaching the new machine bed includes attaching the assembled new machine bed to an upper surface of the existing machine bed from which the existing hoisting machine has been removed. How to renew the aircraft. 3. The step of attaching the new machine bed includes stacking and attaching a plurality of new machine beds on the upper surface of the existing machine bed from which the existing hoisting machine has been removed. To renew the elevator hoisting machine. The lower part of the machine beam is embedded in the floor of the machine room provided above the elevator hoistway where the elevator car moves up and down, and the machine bed is mounted on the upper surface of the machine beam. In the renewal method of the elevator hoisting machine in the elevator system in which the hoisting machine that moves up and down is fixed,
Removing the existing hoisting machine fixed to the upper surface of the existing machine bed;
Removing the existing machine bed attached to the upper surface of the existing machine beam;
Carrying a new machine bed having a structure that can be disassembled into a plurality of members and capable of fixing a new hoisting machine on the upper surface into the machine room in a state of being disassembled into the plurality of members;
Assembling a plurality of members carried into the machine room into the new machine bed;
Attaching the assembled new machine bed to the upper surface of the existing machine beam from which the existing machine bed has been removed from the upper surface;
A method for renewing an elevator hoisting machine, comprising: a step of fixing the new hoisting machine to an upper face of a new machine bed attached to the upper face of the existing machine beam. An existing machine beam in which the lower part is embedded in the floor of the machine room provided above the elevator hoistway where the elevator car moves up and down;
An existing machine bed which is attached to the upper surface of the existing machine beam and fixes the hoisting machine for moving the car up and down on the upper surface;
A new machine bed that is attached to the upper surface of the existing machine bed and fixes a new hoisting machine for moving the car up and down on the upper surface;
A new hoisting machine fixed to the upper surface of the new machine bed and moving the car up and down on the upper surface;
An elevator system comprising: a new control panel installed in the machine room and drivingly controlling the new hoisting machine.

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